OS0501-122 接着層厚さが小さい場合における接着接合板の応力特異性強さ

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  • OS0501-122 Intensity of Singular Stress Butt Joints for Small Adhesive Thickness

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Adhesive joints are widely used in wide industrial fields, supplementing or replacing traditional joining technologies. However, a mismatch due to different materials properties may cause stress singularity at the edge of an interface between the materials, which causes debonding of structures. Since few studies are available for evaluating the bonded strength, this study focuses on the solutions for the intensity of the singular stress for the semi-infinite butt joint. In this research, an effective numerical method combined with FEM results is used to obtain the SIFs at corner of adhesive joints in arbitrary material combinations. Here, the solution of bonded plate, which has already been solved accurately in the previous study, is used as the reference problem. In this paper, the effect of adhesive thickness on the intensity of singular stress will be analyzed, also the effects of material combination on the intensity of singular stress at the end of the adhesive with thin layer in a semi-infinite plate will be discussed.

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